Cement-lined pipe and fitting.



GLW. PRIEST.

05mm LINED PIPE AND FITTING.

APPLICATION FILED JAN. 6, 1911. 7

1,005,466, Patented 001;. 10,1911.

cement lining is applied.

GEORGE W. PRIEST, 0F NEWTON, MASSACHUSETTS.

CEMENT-LINED PIPE AND FITTING.

To (17? whom it may concern:

Be it known that I, GEORGE ll". PRIEST, residing at Bewton, 1n the county of Middlesex 1 s n 4 and btate or Massachusetts, have invented an Improvement in Cement-Lined Pipes and Fittings, of which the following is a specification.

This invention relates to an improved cement-lined pipe and fitting, and has for its object to provide a cement-lined pipe and fitting connected with said pipe, with improved meanst'or closing the joint at the end of the cement1ined pipe and an adja cent pipe, within the fitting, to protect the fitting "from the action of the contents of the pipe.

Figure 1 is a longitudinal vertical section of a cement-lined pipe and-fitting embodying this invention. having the end portion of an adjacent pipe connected therewith. Fig. 2 is a side elevation, and Fig. 3 is a plan view of a metal sleeve which is employed for closing the joint at-the end of two cement-lined pipes within a fitting.

The metal pipe section a and metal fitting 6, connected to the end thereof, are or may be of any usual or suitable construction. The fitting here shown for the purpose of illustrating my invention is represented as a couplin but my invention includes all forms of fittings ordinarily used in connection with pipes. The fitting b is connected to the end of the pipe section a, before the Said lining is represented at c and extends continuously throughout the length of the pi )e section and into the fitting, terminating a mat midway the length of the fitting.

A metal sleeve is located in the fitting. which is made of brass or other non-oxidizable metal not readily acted upon by the contents of the pipe. Said sleeve is madequite short and comprises a tubular body (Z having an outwardly extended tapering flange d at one end, said flange having apertures (Z at its edge, or elsewhere, of any suitable size and shape. The internal diameter of the tubular body (Z corresponds to the diameter of the bore of the cement-lined pipe, so that said body may serve as and form a part of said bore; and the flange is made large enough to engage or abut against-the end of the metal pipe section.

The cement lining is applied while the metal sleeve. thus constructed, is held in place with its flange abutting against the end of Specification of Letters Patent. I Application filed January 6, 1911. Serial No. 601,058.

Patented 0a. to, anti.

the pipe section, and consequently the cement passes through the apertures (Z and around the tubular body (Z, and the flange becomes anchored in the cement and the whole sleeve becomes embedded therein. i

The metal sleeve extends beyond the end of the cement lining in. the fitting. to form an annular recess between it and the fitting to receive the opposite end of an adjacent pipe section. The cement lining 0 extends to the opposite end of the pipe section. but at said opposite end it is formed with'an annular recess 0', of a depth corresponding to the thickness of the metal of the sleeve. This end of the pipe will be connected to the fitting ot'an adjacent pipe section, and will be projected into the recess between the sleeve and fitting, and the shoulder at the bottom of the recess 0 will abut against the end of the sleeve whilethe end of the pipe and its cement lining will abut against the end of the cement lining in the fitting, or against a packing e, which may be placed in the annular recess atthe bnttom thereof.

The packing e is preferably employed as the joint is much better protected. By forming the metal sleeve with a flange which abuts against the end of the pipe section it will be seen that w 1911 the end of an adjacent pipe is screwed into the fitting and the end of the sleeve is engaged, endwise pressure upon said sleeve will not tend to dislocate it and thereby crack or hip the cement lining contained in the fitting.

Herein itwill be observed that the sleeve is notcompletely separated from the metal pipe section, but the advantru; of con structing the sleeve so as to obua'te cracking or ch pping the iii by at. I believe more than over I vantages of nothaving it cempie rated from the metal pipe section.

By iforniing the :upcrtures (Z at the edge of the flange (Z, as here shown, it will be observed that engagement. of the sleeve with the metal pipe section is not continuous.

I claim 1. A metal pipe section and fitting coir nected together having a continuous cement lining extending throughout the length of the pipe section and into the fitting. and a metal sleeve arranged in said fitting having an outwardly extended flange at one end which abuts against the. end of the pipe -ction, said sleeve being embedded in the cement lining, substantially as described.

telv

2. A metal pipe section and fitting connected together having a contmuous cement lining extending throughout the length of lining extending throughout the length of the pipe section and into the fitting, and a metal sleeve arranged in said fitting having an outwardly extended flange at one end with an apertured edge, which abuts against the end of the pipe section, said sleeve being embedded in the cement lining, substantially as described.

4. A metal pipe section and fitting connected together having a continuous cement lining extending throughout the length of the pipe section and into the fitting, and a metal sleeve arranged in said fitting having an outwardly extended flange at one end which abuts against the end of the pipe section, said sleeve being embedded in the cement lining and extended beyond the end of said lining to'form an annular recess between it and the fitting, to receive the end of another cement-lined pipe section, substantially as described.

5. A metal pipe section and fitting connected together having a continuous cement lining extending throughout the length of 1,00a4ee the pipe section and into the. fitting, and a metal sleeve arranged in said fitting having an outwardly extended flange at one end an outwardly extended flange at one end which abuts against the end of the pipe section, said sleeve being embedded 1n the cement lining, and extended beyond the end of said lining to form an annular recess between it and the fitting, and another pipe section having a *ement lining, the said lining at the end of the second pipe section being formed with an annular re cess thereby adapting said second pipe section to be connected with the aforesaid fitting and to enter the recess between said fitting and sleeve, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of twosubscribing witnesses.

GEORGE W. PRIEST. Witnesses:

B. J. No es, H. B. DAVIS. 

